UNDERPROOF

Yes, UNDERPROOF is a Scrabble word!

Letter values in Scrabble US: U 1, N 1, D 2, E 1, R 1, P 3, R 1, O 1, O 1, F 4.U 1 · N 1 · D 2 · E 1 · R 1 · P 3 · R 1 · O 1 · O 1 · F 4

Is it a valid word?

• Scrabble US: valid, 16 points.Scrabble USYour dictionary · Change (go to the dictionary switch)Valid · 16 points
• Scrabble UK: valid, 16 points. Make Scrabble UK your dictionary.Scrabble UKYour dictionary · ChangeValid · 16 points
• Words with Friends: valid, 19 points. Make Words with Friends your dictionary.Words with FriendsYour dictionary · ChangeValid · 19 points